 import {getLyric} from 'api/song'
 import {ERR_OK} from 'api/config'
 import {Base64} from 'js-base64'

export default class Song {
  constructor({id, mid, singer, name, album, duration, image, url}) {
    this.id = id
    this.mid = mid
    this.singer = singer
    this.name = name
    this.album = album
    this.duration = duration
    this.image = image
    this.url = url
  }

   getLyric() {
     if (this.lyric) {
       return Promise.resolve(this.lyric)
     }

    return new Promise((resolve, reject) => {
       getLyric(this.mid).then((res) => {
         if (res.retcode === ERR_OK) {
           this.lyric = Base64.decode(res.lyric)
           resolve(this.lyric)
         } else {
           reject('no lyric')
         }
       })
     })
   }
 }

 export function createSong(musicData) {
   return new Song({
     id: musicData.songid,
     mid: musicData.songmid,
     singer: filterSinger(musicData.singer),
     name: musicData.songname,
     album: musicData.albumname,
     duration: musicData.interval,
     image: `https://y.gtimg.cn/music/photo_new/T002R300x300M000${musicData.albummid}.jpg?max_age=2592000`,
     url: `http://ws.stream.qqmusic.qq.com/${musicData.songid}.m4a?fromtag=46`
   })
 }

 function filterSinger(singer) {
   let ret = []
   if (!singer) {
    return ''
   }
   singer.forEach((s) => {
     ret.push(s.name)
   })
   return ret.join('/')
 }

